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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10450931 B1

PDFFull Text
Date of Patent:
Oct. 22, 2019

Filed:

Jul. 10, 2017

Exhaust gas control apparatus for internal combustion engine

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventors:

Kensuke Kitagawa, Susono, JP;

Akira Yamashita, Sunto-gun, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Ngoc T Nguyen

Int. Cl.
CPC ...
F01N 9/00 (2006.01); F01N 3/025 (2006.01); F02B 37/00 (2006.01); F02D 41/02 (2006.01); F02D 41/40 (2006.01); F01N 11/00 (2006.01); F02D 41/14 (2006.01); B01D 46/00 (2006.01); B01D 46/44 (2006.01);
U.S. Cl.
CPC ...
F01N 9/002 (2013.01); F01N 3/0253 (2013.01); F01N 11/002 (2013.01); F02B 37/00 (2013.01); F02D 41/029 (2013.01); F02D 41/1448 (2013.01); F02D 41/405 (2013.01); B01D 46/0063 (2013.01); B01D 46/446 (2013.01); B01D 2279/30 (2013.01); F01N 2550/04 (2013.01); F01N 2560/08 (2013.01); F01N 2900/0416 (2013.01); F01N 2900/0422 (2013.01); F01N 2900/102 (2013.01); F01N 2900/1406 (2013.01); F01N 2900/1606 (2013.01); F02D 2200/0812 (2013.01); Y02T 10/144 (2013.01); Y02T 10/47 (2013.01);
Abstract

A basic regeneration completion pressure difference value is set based on a predicted deposition amount of incombustible deposits produced steadily on a particulate filter, and a corrected regeneration completion pressure difference value higher than the basic regeneration completion pressure difference value is set based on a deposition amount of incombustible deposits deposited unsteadily on the particulate filter. After regeneration processing starts, when a time for which a pressure difference value is maintained to be equal to or greater than the basic regeneration completion pressure difference value after decreasing to the corrected regeneration completion pressure difference value exceeds a prescribed regeneration completion time, the regeneration processing ends.

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